If they exist, at least one view of any dependency structures, such as privies, milk or ice houses, carriage houses, sheds, detached garages, or barns. These structures need to be identified in the Index to Photographs

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Engineering and Industrial Structures:

This encompasses a wide variety of structure types, such as manufacturing complexes, bridges, locks and dams, and mines. The buildings and structures housing the industrial process will be captured with the types of views outlined above and special attention will be paid to the equipment involved in the flow and transformation of material going through the building. This can include:

Any extant machinery and equipment, also capturing the spatial arrangements.

Machinery details, such as the governor on a turbine, valves of a steam engine, or the gearing in machines like fabric looms, or other details that reveal a machine’s function like the cone of a rock crusher or drum of a shredder.

Power transmission systems, such as line shafting.

General views and details of structural framing systems, including roof trusses and floor beam systems and pedestals that supported the building structure and the equipment and machinery.

If accessible, the traffic deck support system (such as floor beams and stringers viewed from underneath the bridge).

Abutments and approach details.

Linear Resources:

For canals, railroads, or roads; the photographs will be organized in a logical progression with the captions including mile markers. The following types of views will be captured along with views of the resource itself:

Significant or typical structures; depending on the resource, this might include culverts, retaining walls, bridges, or locks and dams.

Contextual shots that illustrate the resource’s path through the landscape.

Watercraft:

The captions for watercraft do not include cardinal directions; rather, the maritime terms of aft, forward, starboard, and port are used. In addition, on larger ships, the deck names or numbers will be identified. The following will be captured, depending on whether the watercraft uses mechanical or sail propulsion:

Elevations of port, starboard, bow, and hull.

General deck views.

Details of deck machinery, such as windlasses, as well as propulsion systems.

Details of ship or vessel that relate directly to its specialized functions. These images will depictwhat the vessel actually does.

Sailing rig.​

Cultural Landscapes:

Possible subject matter could include formal gardens, ranches, or city parks, with an emphasis on capturing the broader context of landscape design, use, and geography. Aspects of a cultural landscape to capture including the following:

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Contextual views of the landscape under various seasonal conditions; aerial photographs can be especially helpful.

General landscape views.

Structures and structural elements, such as fences and hardscaping.

Views capturing the spatial relations of buildings, structures, and the landscape.

Vegetation should be identified with both common and botanical names in the Index to Photographs.